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Re: [APML] Proper exposure for the lunar eclipse
Good comments Dominic! Further to Rick's question, I was thinking of
doing the following and would appreciate commentary before wasting my
time or missing the eclipse:
With my 400mm lens riding on the drift aligned mount, open the shutter
with the moon at the west side of the frame for say 4 seconds once it
has fully entered the penumbra, cover the lens with a black t-shirt
until the moon is at the mid point of traversing the umbra, t-shirt
again and return for the re-entry into the penumbra. This whole sequence
would traverse about 2.5 degrees so would be comfortably held in the fov
of the 400mm lens (fov 4x6 degrees approx). Will the film be fogged or
will something else go wrong? I will not be autoguiding so I am somewhat
concerned by trailing stars but four second exposures in the penumbra
and maybe longer in the umbra seems unlikely to trail stars if any even
show up.
I think I'll use a second camera as Dominic suggests and take prime
focus shots throughout so if plan 'a' goes awry, I can still compose
something via stacking.
Thoughts?
Stuart
Dominic Cantin wrote:
> Hi Rick !
>
> I suggest you to vary your exposure time , you can pass all the range
> of your camera , dont be affraid to pass few rolls on this eclipse ;)
> In january 2000 , I tried 2 , 4 , 6 , 8 , 10 seconds on primary focus
> of a 10" at f 4 = 1000mm on a fuji superia 800 , the 2 , 4 and 6 gave
> me good result but I like a litle bit more the one with 2 sec. you can
> see the result here http://www.spacew.com/gallery/image000183.html
>
> Good luck to all for this eclipse !!!
>
> Rick Kellogg <rkellog1@twcny.rr.com> wrote:
>
> All,
>
> Does anyone have a recommended exposure for photographing the moon
> during
> the eclipse when it is totally eclipsed?
>
> Rick Kellogg
>
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